參數資料
| 型號： | AD5557CRUZ |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 14BIT 2CH I OUT 38TSSOP |
| 產品培訓模塊： | Data Converter Fundamentals DAC Architectures |
| 設計資源： | Precision, Unipolar, Inverting Conversion Using AD5547/57 DAC (CN0026) Precision, Unipolar, Noninverting Configuration for the AD5547/57 DAC (CN0027) Precision, Bipolar, Configuration for AD5547/AD5557 DAC (CN0028) |
| 標準包裝： | 1 |
| 設置時間： | 500ns |
| 位數： | 14 |
| 數據接口： | 并聯 |
| 轉換器數目： | 2 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 55µW |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 38-TFSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 38-TSSOP |
| 包裝： | 管件 |
| 輸出數目和類型： | 2 電流，單極；2 電流，雙極 |
| 采樣率（每秒）： | 2M |
| 產品目錄頁面： | 783 (CN2011-ZH PDF) |
Dual-Current Output, Parallel Input, 16-/14-Bit
Multiplying DACs with 4-Quadrant Resistors
Data Sheet
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
2004–2012 Analog Devices, Inc. All rights reserved.
FEATURES
Dual channel
16-bit resolution: AD5547
14-bit resolution: AD5557
2- or 4-quadrant, 6.8 MHz BW multiplying DAC
±1 LSB DNL
±1 LSB INL
Operating supply voltage: 2.7 V to 5.5 V
Low noise: 12 nV/√Hz
Low power: I
DD = 10 A max
0.5 s settling time
Built-in R
FB facilitates current-to-voltage conversion
Built-in 4-quadrant resistors allow 0 V to –10 V, 0 V to +10 V,
or ±10 V outputs
2 mA full-scale current ± 20%, with V
REF = 10 V
Extended automotive operating temperature range
40°C to +125°C
Selectable zero-scale/midscale power-on presets
Compact 38-lead TSSOP package
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
Digital waveform generation
FUNCTIONAL BLOCK DIAGRAM
DAC A
D0..D15
OR
D0..D13
DAC A
DAC B
ADDR
DECODE
INPUT
REGISTER
RS
DAC A
REGISTER
RS
DAC B
REGISTER
RS
POWER
ON
RESET
VDD
RCOMB
RCOMA
R1A
ROFSA
VREFA
R1B
ROFSB
04452-
013
RFBA
AGNDA
AGNDB
VREFB
IOUTA
RFBB
IOUTB
D0 TO D15
(AD5547)
D0 TO D13
(AD5557)
A0, A1
MSB
LDAC
DGND
WR
RS
INPUT
REGISTER
RS
DAC B
AD5547/AD5557
Figure 1.
GENERAL DESCRIPTION
The AD5547/AD5557 are dual precision, 16-/14-bit, multiplying,
low power, current-output, parallel input, digital-to-analog
converters (DACs). They are designed to operate from single
+5 V supply with ±10 V multiplying references for 4-quadrant
outputs with 6.8 MHz bandwidth.
The built-in, 4-quadrant resistors facilitate resistance matching
and temperature tracking, which minimize the number of
components needed for multiquadrant applications. In addition,
the feedback resistor (RFB) simplifies the I-to-V conversion with
an external buffer.
package and operate at the extended automotive temperature
range of 40°C to +125°C.
VREF
–VREF
–VREF TO +VREF
04452-
002
U1
C1
R1A
16/14 DATA
RCOMA
R1
R2
ROFSA
RFBA
C2
RFB
ROFS
16-/14-BIT
DAC A
MSB A0, A1
2
POWER-ON
RESET
AD5547/AD5557
IOUTA
AGNDA
(ONE CHANNEL SHOWN ONLY)
U2
VOUTA
VREFA
MSB
A0, A1
LDAC
WR
RS
WR
RS
LDAC
Figure 2. 16-/14-Bit 4-Quadrant Multiplying DAC with Minimum of External Components (Only One Channel Is Shown)
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